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  2. Coherence time (communications systems) - Wikipedia

    en.wikipedia.org/wiki/Coherence_time...

    Coherence time is actually a statistical measure of the time duration over which the channel impulse response is essentially invariant, and quantifies the similarity of the channel response at different times. In other words, coherence time is the time duration over which two received signals have a strong potential for amplitude correlation.

  3. Alltel - Wikipedia

    en.wikipedia.org/wiki/Alltel

    Alltel was a landline, wireless and general telecommunications services provider, primarily based in the United States. Before its wireless division was acquired by Verizon Wireless and AT&T, Alltel provided cellular service to 34 states and had approximately 13 million subscribers. As a regulatory condition of the acquisition by Verizon, a ...

  4. AOL Mail for Verizon Customers - AOL Help

    help.aol.com/products/aol-mail-verizon

    Learn how to update your settings to make AOL Mail look and feel exactly how you need it. Netscape Internet Service (ISP) · Jan 30, 2024. Get answers to your AOL Mail, login, Desktop Gold, AOL app, password and subscription questions. Find the support options to contact customer care by email, chat, or phone number.

  5. Emails in AOL Mail cannot be unsent - AOL Help

    help.aol.com/articles/recall-or-unsend-an-email...

    The ability to recall or unsend an email is not available in AOL Mail, because we provide a web-based service which sends messages instantly and once you send an email message, it's gone from your email server and out of our control. If you're unsure about sending an email, save the message to think things over, then send it later.

  6. Right to Recall laws in India - Wikipedia

    en.wikipedia.org/wiki/Right_to_Recall_Laws_in_India

    In modern India, Sachindra Nath Sanyal was the first to demand the right to replace public servants. The manifesto of the Hindustan Republican Association was written by Sachindra Nath Sanyal some when in December 1924. In his manifesto it's written that, "In this Republic the electors shall have the right to recall their representatives, if so ...

  7. Leap Wireless - Wikipedia

    en.wikipedia.org/wiki/Leap_Wireless

    Leap Wireless International, Inc. was a telecommunications operator that provided wireless services to approximately 4.6 million subscribers, the 5th largest, through its subsidiary, Cricket Communications, Inc. (Cricket Wireless). It was headquartered in San Diego, California. Leap Wireless and Cricket Wireless are now subsidiaries of AT&T .

  8. List of mobile virtual network operators in the United ...

    en.wikipedia.org/wiki/List_of_mobile_virtual...

    List of mobile virtual network operators in the United Kingdom. This is a list of notable mobile virtual network operators (MVNOs) in the United Kingdom, which lease wireless telephone and data spectrum from the four major carriers EE, O2, Three and Vodafone for resale.

  9. Google Fi Wireless - Wikipedia

    en.wikipedia.org/wiki/Google_Fi_Wireless

    fi.google.com. Google Fi Wireless (pronounced / faɪ / ), formerly Project Fi and Google Fi, is an American MVNO telecommunications service by Google that provides telephone calls, SMS, and mobile broadband using cellular networks and Wi-Fi. Google Fi uses the T-Mobile network. Google Fi is a service for US residents only, as of late 2023.